NC0088773_Request to Rescind_20191122

The DOW CitPlniC COmpAwW
22 November 2019
Mr. Charles Weaver
Division of Water Resources
Water Quality Permitting Section-NPDES RECEIVED 1617 Mail Service Center
Raleigh,NC 27699-1617 NOV 2 6 2019
Subject: Request to Rescind NPDES Permit#NC0088773
Dow Silicones Facility NCDEQIDWRINPDES
2914 Patterson Street,Greensboro,North Carolina
Dear Mr. Weaver,
Dow Silicones Corporation is submitting this correspondence to formally request that NPDES
Permit#NC0088773 be rescinded. This permit is associated with a Dual Phase Extraction(DPE)
Groundwater Remediation System previously operated at the Dow Silicones Facility located at
2914 Patterson Street in Greensboro, Guilford County,North Carolina(the Site). The DPE
system was shut down on October 19,2017 to conduct a yearlong rebound study. In December
2018 the results of the rebound study were provided to the Division of Waste Management
(DWM), including a recommendation to terminate system operations. The DPE system was left
off-line during this timeframe,pending review of the shutdown request. In a letter dated
November 12,2019(see attached), the NCDEQ DWM approved Dow's recommendation to
cease operations of the DPE system. Since the system has remained off-line since October 2017
with no active discharge, Dow requests that NPDES Permit#NC0088773 be rescinded at your
earliest possible convenience.
Please contact me at(215) 785-7373 or Chuck Bertz with Arcadis at(919)415-2325 if
additional information is needed to support this request.
Regards,
James F. Strunk,Jr.
Associate EHS Remediation Director
Authorized Representative
Dow Silicones Corporation
Enclosure
•
cc: Jenny Graznack—Division of Water Resources _
Allen Hetzer-DuPont(electronic)
Chuck Bertz—Arcadis (electronic)
File
Dow Silicones Corporation
A wholly owned subsidiary of
The Dow Chemical Company
Greensboro,NC 27407 I USA
Phone:[phone]
dowcorning.com

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ROY COOPER NORTH CAROLINA
Governor Environmental Quality
MICHAEL S.REGAN
Secretary
MICHAEL SCOTT
Director
November 12,2019
James F. Strunk,Jr.
Associate EHS Remediation Director
Dow Silicones Corporation
310 George Patterson Boulevard, Suite 100
Bristol,Pennsylvania 19007
Re: Dual Phase Extraction System Rebound Testing Results Report
Dow Silicones Corporation
Greensboro,North Carolina
NCD 003 221 546
Dear Mr. Strunk:
The North Carolina Hazardous Waste Section has completed its review of Dow Silicones Corporation's
Dual Phase Extraction System Rebound Testing Results Report dated December 12,2018. The
Hazardous Waste Section agrees with the conclusions of the report that the influence and effectiveness
of Dual Phase Extraction system is limited and its continued operation would provide little benefit.
Dow Silicones may cease operation of the Dual Phase Extraction system. The Building 3 soil and
groundwater remediation will be addressed in the site wide remedial activities of the Dow Silicones
facility. ,
If you have any questions,please contact me at(919)707-8215 or [e-mail].
Sincerely,
of 16
Robert C. McDaniel,Hydrogeologist
Hazardous Waste Section
Division of Waste Management,NC DEQ
ec: James F. Strunk, Jr.
Harold A. McCarty
Dan Girdner
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North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1164b Mall Service Center I Raleigh,North Carolina 27699-1646
919.707.8200